Currently, I am trying to use convert a hexadecimal string to a double. For background, I sending a number such as 2.0 through bluetooth to receive a byte array such as [0,0,0,64]. From there I tried to converting it to a hexadecimal using hex.encode(), and I received 00000040.
At this point, I have been trying to find a method or function in flutter/dart to swap the endianess of the hexadecimal and mainly convert the hexadecimal to a double. I have tried dart functions such as double.parse() and double.tryParse(), but it does not seem to have options to add radix parameters to help designate that the string is a hexadecimal like int.tryParse().
主要，我需要一种将十六进制转换为双精度的方法。任何有用的帮助，将不胜感激。
